An "email prankster" in the U.K. tricked various Trump administration officials into thinking he was other White House officials, according to a report Monday night.
In one episode, CNN reported, the prankster posed as Jared Kushner, President Trump's son-in-law and senior adviser, and wrote to Homeland Security Adviser Tom Bossert, who revealed his personal email address unsolicited.
Bossert works on cybersecurity issues, but still fell for the prank.
"Tom, we are arranging a bit of a soirée towards the end of August," the prankster posing as Kushner wrote to Bossert's official White House email account.
"It would be great if you could make it, I promise food of at least comparible (sic) quality to that which we ate in Iraq. Should be a great evening."
Bossert wrote back: "Thanks, Jared. With a promise like that, I can't refuse. Also, if you ever need it, my personal email is" (redacted).
The email prankster, who tweets under the account, @SINON_REBORN, willingly provided the email exchanges to CNN and claimed to not have malicious intent.
Another incident involving the prankster may have escalated tensions between former White House Chief of Staff Reince Priebus and Anthony Scaramucci, the former communications director, both of whom have resigned from their positions.
Acting as Priebus, the prankster on Saturday emailed Scaramucci at his White House account. The real Priebus had resigned a day earlier.
"I had promised myself I would leave my hands mud free," wrote the fake Priebus, "but after reading your tweet today which stated how; 'soon we will learn who in the media who has class, and who hasn't', has pushed me to this. That tweet was breathtakingly hypocritical, even for you.
"At no stage have you acted in a way that's even remotely classy, yet you believe that's the standard by which everyone should behave towards you? General Kelly will do a fine job. I'll even admit he will do a better job than me. But the way in which that transition has come about has been diabolical. And hurtful. I don't expect a reply."
Scaramucci responded: "You know what you did. We all do. Even today. But rest assured we were prepared. A Man would apologize."
Fake Priebus wrote back: "I can't believe you are questioning my ethics! The so called 'Mooch', who can't even manage his first week in the White House without leaving upset in his wake. I have nothing to apologize for."
Scaramucci responded: "Read Shakespeare. Particularly Othello. You are right there. My family is fine by the way and will thrive. I know what you did. No more replies from me."
Scaramucci was also tricked in a second episode, by the same prankster posing as Jon Huntsman, Trump's nominee to be U.S. ambassador to Russia.
"Who's (sic) head should roll first?" the prankster posing Huntsman asked from a Gmail account on Friday, before Priebus resigned. "Maybe I can help things along somewhat."
"Both of them," Scaramucci responded, in an apparent reference to Priebus and White House senior adviser Steve Bannon, both of whom Scaramucci vulgarly criticized last week in an interview with The New Yorker.
Huntsman himself was also tricked, CNN said, as was Eric Trump, the second-eldest son.
Eric Trump caught on and said he would forward his exchange with the prankster to law enforcement.
The White House said it is looking into how various officials were pranked.
"We take all cyber-related issues very seriously and are looking into these incidents further," White House press secretary Sarah Huckabee Sanders told CNN.